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-rw-r--r--src/sha1.c321
1 files changed, 162 insertions, 159 deletions
diff --git a/src/sha1.c b/src/sha1.c
index ad68bd3..d32c241 100644
--- a/src/sha1.c
+++ b/src/sha1.c
@@ -69,200 +69,203 @@
static void sha1_transform(uint32_t state[5], const uint8_t buffer[64])
{
- typedef union {
- uint8_t c[64];
- uint32_t l[16];
- } b64_t;
+ typedef union {
+ uint8_t c[64];
+ uint32_t l[16];
+ } b64_t;
- b64_t *block = (b64_t *) buffer;
- uint32_t a = state[0];
- uint32_t b = state[1];
- uint32_t c = state[2];
- uint32_t d = state[3];
- uint32_t e = state[4];
+ b64_t *block = (b64_t *) buffer;
+ uint32_t a = state[0];
+ uint32_t b = state[1];
+ uint32_t c = state[2];
+ uint32_t d = state[3];
+ uint32_t e = state[4];
- R0(a, b, c, d, e, 0);
- R0(e, a, b, c, d, 1);
- R0(d, e, a, b, c, 2);
- R0(c, d, e, a, b, 3);
- R0(b, c, d, e, a, 4);
- R0(a, b, c, d, e, 5);
- R0(e, a, b, c, d, 6);
- R0(d, e, a, b, c, 7);
- R0(c, d, e, a, b, 8);
- R0(b, c, d, e, a, 9);
- R0(a, b, c, d, e, 10);
- R0(e, a, b, c, d, 11);
- R0(d, e, a, b, c, 12);
- R0(c, d, e, a, b, 13);
- R0(b, c, d, e, a, 14);
- R0(a, b, c, d, e, 15);
- R1(e, a, b, c, d, 16);
- R1(d, e, a, b, c, 17);
- R1(c, d, e, a, b, 18);
- R1(b, c, d, e, a, 19);
- R2(a, b, c, d, e, 20);
- R2(e, a, b, c, d, 21);
- R2(d, e, a, b, c, 22);
- R2(c, d, e, a, b, 23);
- R2(b, c, d, e, a, 24);
- R2(a, b, c, d, e, 25);
- R2(e, a, b, c, d, 26);
- R2(d, e, a, b, c, 27);
- R2(c, d, e, a, b, 28);
- R2(b, c, d, e, a, 29);
- R2(a, b, c, d, e, 30);
- R2(e, a, b, c, d, 31);
- R2(d, e, a, b, c, 32);
- R2(c, d, e, a, b, 33);
- R2(b, c, d, e, a, 34);
- R2(a, b, c, d, e, 35);
- R2(e, a, b, c, d, 36);
- R2(d, e, a, b, c, 37);
- R2(c, d, e, a, b, 38);
- R2(b, c, d, e, a, 39);
- R3(a, b, c, d, e, 40);
- R3(e, a, b, c, d, 41);
- R3(d, e, a, b, c, 42);
- R3(c, d, e, a, b, 43);
- R3(b, c, d, e, a, 44);
- R3(a, b, c, d, e, 45);
- R3(e, a, b, c, d, 46);
- R3(d, e, a, b, c, 47);
- R3(c, d, e, a, b, 48);
- R3(b, c, d, e, a, 49);
- R3(a, b, c, d, e, 50);
- R3(e, a, b, c, d, 51);
- R3(d, e, a, b, c, 52);
- R3(c, d, e, a, b, 53);
- R3(b, c, d, e, a, 54);
- R3(a, b, c, d, e, 55);
- R3(e, a, b, c, d, 56);
- R3(d, e, a, b, c, 57);
- R3(c, d, e, a, b, 58);
- R3(b, c, d, e, a, 59);
- R4(a, b, c, d, e, 60);
- R4(e, a, b, c, d, 61);
- R4(d, e, a, b, c, 62);
- R4(c, d, e, a, b, 63);
- R4(b, c, d, e, a, 64);
- R4(a, b, c, d, e, 65);
- R4(e, a, b, c, d, 66);
- R4(d, e, a, b, c, 67);
- R4(c, d, e, a, b, 68);
- R4(b, c, d, e, a, 69);
- R4(a, b, c, d, e, 70);
- R4(e, a, b, c, d, 71);
- R4(d, e, a, b, c, 72);
- R4(c, d, e, a, b, 73);
- R4(b, c, d, e, a, 74);
- R4(a, b, c, d, e, 75);
- R4(e, a, b, c, d, 76);
- R4(d, e, a, b, c, 77);
- R4(c, d, e, a, b, 78);
- R4(b, c, d, e, a, 79);
+ R0(a, b, c, d, e, 0);
+ R0(e, a, b, c, d, 1);
+ R0(d, e, a, b, c, 2);
+ R0(c, d, e, a, b, 3);
+ R0(b, c, d, e, a, 4);
+ R0(a, b, c, d, e, 5);
+ R0(e, a, b, c, d, 6);
+ R0(d, e, a, b, c, 7);
+ R0(c, d, e, a, b, 8);
+ R0(b, c, d, e, a, 9);
+ R0(a, b, c, d, e, 10);
+ R0(e, a, b, c, d, 11);
+ R0(d, e, a, b, c, 12);
+ R0(c, d, e, a, b, 13);
+ R0(b, c, d, e, a, 14);
+ R0(a, b, c, d, e, 15);
+ R1(e, a, b, c, d, 16);
+ R1(d, e, a, b, c, 17);
+ R1(c, d, e, a, b, 18);
+ R1(b, c, d, e, a, 19);
+ R2(a, b, c, d, e, 20);
+ R2(e, a, b, c, d, 21);
+ R2(d, e, a, b, c, 22);
+ R2(c, d, e, a, b, 23);
+ R2(b, c, d, e, a, 24);
+ R2(a, b, c, d, e, 25);
+ R2(e, a, b, c, d, 26);
+ R2(d, e, a, b, c, 27);
+ R2(c, d, e, a, b, 28);
+ R2(b, c, d, e, a, 29);
+ R2(a, b, c, d, e, 30);
+ R2(e, a, b, c, d, 31);
+ R2(d, e, a, b, c, 32);
+ R2(c, d, e, a, b, 33);
+ R2(b, c, d, e, a, 34);
+ R2(a, b, c, d, e, 35);
+ R2(e, a, b, c, d, 36);
+ R2(d, e, a, b, c, 37);
+ R2(c, d, e, a, b, 38);
+ R2(b, c, d, e, a, 39);
+ R3(a, b, c, d, e, 40);
+ R3(e, a, b, c, d, 41);
+ R3(d, e, a, b, c, 42);
+ R3(c, d, e, a, b, 43);
+ R3(b, c, d, e, a, 44);
+ R3(a, b, c, d, e, 45);
+ R3(e, a, b, c, d, 46);
+ R3(d, e, a, b, c, 47);
+ R3(c, d, e, a, b, 48);
+ R3(b, c, d, e, a, 49);
+ R3(a, b, c, d, e, 50);
+ R3(e, a, b, c, d, 51);
+ R3(d, e, a, b, c, 52);
+ R3(c, d, e, a, b, 53);
+ R3(b, c, d, e, a, 54);
+ R3(a, b, c, d, e, 55);
+ R3(e, a, b, c, d, 56);
+ R3(d, e, a, b, c, 57);
+ R3(c, d, e, a, b, 58);
+ R3(b, c, d, e, a, 59);
+ R4(a, b, c, d, e, 60);
+ R4(e, a, b, c, d, 61);
+ R4(d, e, a, b, c, 62);
+ R4(c, d, e, a, b, 63);
+ R4(b, c, d, e, a, 64);
+ R4(a, b, c, d, e, 65);
+ R4(e, a, b, c, d, 66);
+ R4(d, e, a, b, c, 67);
+ R4(c, d, e, a, b, 68);
+ R4(b, c, d, e, a, 69);
+ R4(a, b, c, d, e, 70);
+ R4(e, a, b, c, d, 71);
+ R4(d, e, a, b, c, 72);
+ R4(c, d, e, a, b, 73);
+ R4(b, c, d, e, a, 74);
+ R4(a, b, c, d, e, 75);
+ R4(e, a, b, c, d, 76);
+ R4(d, e, a, b, c, 77);
+ R4(c, d, e, a, b, 78);
+ R4(b, c, d, e, a, 79);
- state[0] += a;
- state[1] += b;
- state[2] += c;
- state[3] += d;
- state[4] += e;
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
- a = b = c = d = e = 0;
+ a = b = c = d = e = 0;
}
void sha1_init(sha1_ctx_t * ctx)
{
- ctx->state[0] = 0x67452301;
- ctx->state[1] = 0xEFCDAB89;
- ctx->state[2] = 0x98BADCFE;
- ctx->state[3] = 0x10325476;
- ctx->state[4] = 0xC3D2E1F0;
+ ctx->state[0] = 0x67452301;
+ ctx->state[1] = 0xEFCDAB89;
+ ctx->state[2] = 0x98BADCFE;
+ ctx->state[3] = 0x10325476;
+ ctx->state[4] = 0xC3D2E1F0;
- ctx->count[0] = ctx->count[1] = 0;
+ ctx->count[0] = ctx->count[1] = 0;
}
void sha1_update(sha1_ctx_t * ctx, const uint8_t * data, unsigned int len)
{
- unsigned int i, j;
+ unsigned int i, j;
- j = (ctx->count[0] >> 3) & 63;
- if ((ctx->count[0] += len << 3) < (len << 3))
- ctx->count[1]++;
- ctx->count[1] += (len >> 29);
+ j = (ctx->count[0] >> 3) & 63;
+ if ((ctx->count[0] += len << 3) < (len << 3))
+ ctx->count[1]++;
+ ctx->count[1] += (len >> 29);
- if (j + len > 63) {
- memcpy(&ctx->buffer[j], data, (i = 64 - j));
- sha1_transform(ctx->state, ctx->buffer);
- for (; i + 63 < len; i += 64)
- sha1_transform(ctx->state, &data[i]);
- j = 0;
- } else {
- i = 0;
- }
- memcpy(&ctx->buffer[j], &data[i], len - i);
+ if (j + len > 63) {
+ memcpy(&ctx->buffer[j], data, (i = 64 - j));
+ sha1_transform(ctx->state, ctx->buffer);
+ for (; i + 63 < len; i += 64)
+ sha1_transform(ctx->state, &data[i]);
+ j = 0;
+ } else {
+ i = 0;
+ }
+ memcpy(&ctx->buffer[j], &data[i], len - i);
}
void sha1_final(sha1_ctx_t * ctx, uint8_t digest[SHA1_DIGESTLEN])
{
- uint32_t i, j;
- uint8_t finalcount[8];
+ uint32_t i, j;
+ uint8_t finalcount[8];
- for (i = 0; i < 8; i++) {
- finalcount[i] = (uint8_t) ((ctx->count[(i >= 4 ? 0 : 1)] >>
- ((3 - (i & 3)) * 8)) & 255);
- }
+ for (i = 0; i < 8; i++) {
+ finalcount[i] = (uint8_t) ((ctx->count[(i >= 4 ? 0 : 1)] >>
+ ((3 - (i & 3)) * 8)) & 255);
+ }
- sha1_update(ctx, (uint8_t *) "\200", 1);
- while ((ctx->count[0] & 504) != 448)
- sha1_update(ctx, (uint8_t *) "\0", 1);
+ sha1_update(ctx, (uint8_t *) "\200", 1);
+ while ((ctx->count[0] & 504) != 448)
+ sha1_update(ctx, (uint8_t *) "\0", 1);
- sha1_update(ctx, finalcount, 8);
- for (i = 0; i < SHA1_DIGESTLEN; i++)
- digest[i] = (uint8_t) ((ctx->state[i >> 2] >> ((3 - (i & 3)) * 8)) & 255);
+ sha1_update(ctx, finalcount, 8);
+ for (i = 0; i < SHA1_DIGESTLEN; i++)
+ digest[i] =
+ (uint8_t) ((ctx->
+ state[i >> 2] >> ((3 - (i & 3)) *
+ 8)) & 255);
- i = j = 0;
- memset(ctx->buffer, 0, SHA1_BLOCKLEN);
- memset(ctx->state, 0, SHA1_DIGESTLEN);
- memset(ctx->count, 0, 8);
- memset(&finalcount, 0, 8);
+ i = j = 0;
+ memset(ctx->buffer, 0, SHA1_BLOCKLEN);
+ memset(ctx->state, 0, SHA1_DIGESTLEN);
+ memset(ctx->count, 0, 8);
+ memset(&finalcount, 0, 8);
}
void sha1_digest(const char *data, char *buffer)
{
- sha1_ctx_t ctx;
- uint8_t digest[SHA1_DIGESTLEN];
- int i;
+ sha1_ctx_t ctx;
+ uint8_t digest[SHA1_DIGESTLEN];
+ int i;
- sha1_init(&ctx);
- sha1_update(&ctx, (const uint8_t *)data, strlen(data));
- sha1_final(&ctx, (uint8_t *) digest);
+ sha1_init(&ctx);
+ sha1_update(&ctx, (const uint8_t *)data, strlen(data));
+ sha1_final(&ctx, (uint8_t *) digest);
- for (i = 0; i < SHA1_DIGESTLEN; i++) {
- snprintf(buffer, 3, "%02x", digest[i]);
- buffer += sizeof(char) * 2;
- }
+ for (i = 0; i < SHA1_DIGESTLEN; i++) {
+ snprintf(buffer, 3, "%02x", digest[i]);
+ buffer += sizeof(char) * 2;
+ }
}
void sha1_stream(FILE * fp, char *buffer)
{
- sha1_ctx_t ctx;
- uint8_t data[BUFSIZ];
- size_t bytes_read;
- uint8_t digest[SHA1_DIGESTLEN];
- int i;
+ sha1_ctx_t ctx;
+ uint8_t data[BUFSIZ];
+ size_t bytes_read;
+ uint8_t digest[SHA1_DIGESTLEN];
+ int i;
- sha1_init(&ctx);
+ sha1_init(&ctx);
- while (!feof(fp)) {
- bytes_read = fread(data, 1, BUFSIZ, fp);
- sha1_update(&ctx, data, bytes_read);
- }
+ while (!feof(fp)) {
+ bytes_read = fread(data, 1, BUFSIZ, fp);
+ sha1_update(&ctx, data, bytes_read);
+ }
- sha1_final(&ctx, (uint8_t *) digest);
+ sha1_final(&ctx, (uint8_t *) digest);
- for (i = 0; i < SHA1_DIGESTLEN; i++) {
- snprintf(buffer, 3, "%02x", digest[i]);
- buffer += sizeof(char) * 2;
- }
+ for (i = 0; i < SHA1_DIGESTLEN; i++) {
+ snprintf(buffer, 3, "%02x", digest[i]);
+ buffer += sizeof(char) * 2;
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-18 23:02:33 +0000